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Finding the Fourth Proportional to 181,222.70, 250,078.83 and 100,655.15

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Solution

The fourth proportional to 181,222.70, 250,078.83 and 100,655.15 is: 138,899.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,222.70 : 250,078.83 = 100,655.15 : x
  2. Step 2: Convert to fraction form
    181,222.70/250,078.83 = 100,655.15/x
  3. Step 3: Cross multiply
    181,222.70x = 250,078.83 × 100,655.15
  4. Step 4: Simplify right side
    181,222.70x = 25,171,720,895.08
  5. Step 5: Solve for x
    x = 25,171,720,895.08/181,222.70
  6. Step 6: Final answer
    x = 138,899.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.